Analysis of larynx measurements and proportions in young and adult domestic pigs (Sus scropha domestica)
The aim of the present study was to examine differences in proportions of the larynx between young and adult domestic pigs. Larynges (17 piglets and 14 adults) were obtained from a slaughterhouse where pigs were routinely slaughtered. Anatomical preparation, observation, and description, as well as measurements performed using MULTISCAN image analysis, were used. In the statistical analysis, apart from the arithmetic mean (x) and the standard deviation (SD), Student's t test was used with the statistical significance at a = 0.05. The results showed that a significant influence of sex was observed as far as proportions of the epiglottic cartilage (smaller in older individuals) and the arytenoid cartilage parameters (3b,c) were concerned. The influence of age was found in reference to coefficients determining distance between the back horns of the thyroid cartilage and the length of the front horn of the thyroid cartilage.
Analysis of larynx measurements and proportions in young and adult domestic pigs (Sus scropha domestica)
The aim of the present study was to examine differences in proportions of the larynx between young and adult domestic pigs. Larynges (17 piglets and 14 adults) were obtained from a slaughterhouse where pigs were routinely slaughtered. Anatomical preparation, observation, and description, as well as measurements performed using MULTISCAN image analysis, were used. In the statistical analysis, apart from the arithmetic mean (x) and the standard deviation (SD), Student's t test was used with the statistical significance at a = 0.05. The results showed that a significant influence of sex was observed as far as proportions of the epiglottic cartilage (smaller in older individuals) and the arytenoid cartilage parameters (3b,c) were concerned. The influence of age was found in reference to coefficients determining distance between the back horns of the thyroid cartilage and the length of the front horn of the thyroid cartilage.
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- Cox, K.A., Alipour, F., Titze, I.R.: Geometric structure of the human and canine cricothyroid and thyroarytenoid muscles for biomechanical applications. Ann. Otol. Rhinol. Laryngol., 1999; 108: 1151-1158.
- Frey, R, Gebler, A.: The highly specialized vocal tract of the male Mongolian gazelle (Procapra gutturosa Pallas, 1777-Mammalia, Bovidae). J Anat., 2003; 203: 451-471.
- Jiang, J.J., Raviv, J.R., Hanson, D.G.: Comparison of the phonation-related structures among pig, dog, white-tailed deer, and human larynges. Ann. Otol. Rhinol. Laryngol., 2001; 110: 1120-1125.
- Sanders, I., Wu, B.L., Mu, L., Biller, H.F.: The innervation of the human posterior cricoarytenoid muscle: evidence for at least two neuromuscular compartments. Laryngoscope, 1994; 104: 880-884.
- Choi, H.S., Berke, G.S., Ye, M., Kreiman, J.: Function of the posterior cricoarytenoid muscle in phonation: in vivo laryngeal model. Otolaryngol. Head Neck Surg., 1993; 109: 1043-1051.
- Kahane, J.C.: A morphological study of the human prepubertal and pubertal larynx. Am. J. Anat., 1978; 151: 11-19.
- Moses, R.L., Flint, P.W., Paik, C.H., Zinreich, S.J., Cummings, C.W.: Three-dimensional reconstruction of the feline larynx with serial histologic sections. Laryngoscope, 1995; 105: 164- 168.
- Kasperbauer, J.L.: A biomechanical study of the human cricoarytenoid joint. Laryngoscope, 1998; 108: 1704-1711.
- Kim, M.J., Hunter, E.J., Titze, I.R.: Comparison of human, canine, and ovine laryngeal dimensions. Ann. Otol. Rhinol. Laryngol., 2004; 113: 60-68.
- Kirchner, J.A.: The vertebrate larynx: adaptations and aberrations. Laryngoscope, 1993; 103: 1197-1201.
- Nomina Anatomica Veterinaria. 4th edn., Zürich, New York. 1994: 86-91.
- Dyce, K.M., Sack, W.O., Wensing, C.J.G.: Textbook of Veterinary Anatomy. 2nd edn., W.B. Saunders Co., Philadelphia, 1996: 155-159.